<template>
  <div class="prodetail">
    <van-nav-bar fixed title="商品详情页" left-arrow @click-left="$router.go(-1)" />

    <van-swipe :autoplay="3000" @change="onChange">
      <van-swipe-item v-for="(image, index) in images" :key="index">
        <img :src="image.external_url" />
      </van-swipe-item>

      <template #indicator>
        <div class="custom-indicator">{{ current + 1 }} / {{ images.length }}</div>
      </template>
    </van-swipe>

    <!-- 商品说明 -->
    <div class="info">
      <div class="title">
        <div class="price">
          <span class="now">￥{{ detail.goods_price_min }}</span>
          <span class="oldprice">￥{{ detail.goods_price_max }}</span>
        </div>
        <div class="sellcount">已售{{detail.goods_sales}}件</div>
      </div>
      <div class="msg text-ellipsis-2">
        {{ detail.goods_name }}
      </div>

      <div class="service">
        <div class="left-words">
          <span><van-icon name="passed" />七天无理由退货</span>
          <span><van-icon name="passed" />48小时发货</span>
        </div>
        <div class="right-icon">
          <van-icon name="arrow" />
        </div>
      </div>
    </div>

    <!-- 商品评价 -->
    <div class="comment">
      <div class="comment-title">
        <div class="left">商品评价 ({{total}}条)</div>
        <div class="right">查看更多 <van-icon name="arrow" /> </div>
      </div>
      <div class="comment-list">
        <div class="comment-item" v-for="item in commentList" :key="item.comment_id">
          <div class="top">
            <img :src="item.avatar_url || defaultImg" alt="">
            <div class="name">{{ item.user.nick_name }}</div>
            <van-rate :size="16" :value="item.score /2" color="#ffd21e" void-icon="star" void-color="#eee"/>
          </div>
          <div class="content">
            {{item.content}}
          </div>
          <div class="time">
            {{item.create_time}}
          </div>
        </div>
      </div>
    </div>

    <!-- 商品描述 -->
    <div class="desc" v-html="detail.content">
     
    </div>

    <!-- 底部 -->
    <div class="footer">
      <div class="icon-home" @click="$router.push('/')">
        <van-icon name="wap-home-o" />
        <span>首页</span>
      </div>
     <div class="icon-cart" @click="$router.push('/cart')">
      <span v-if="cartTotal > 0" class="num">{{ cartTotal }}</span>
      <van-icon name="shopping-cart-o" />
      <span>购物车</span>
      </div>
      <div @click="addFn" class="btn-add">加入购物车</div>
      <div @click="buyFn" class="btn-buy">立刻购买</div>
    </div>
   <!-- 加入购物车/立即购买 共同弹层 -->
   <van-action-sheet v-model="showPannel" :title="mode === 'cart' ? '加入购物车' : '立刻购买'">
  <div class="product">
    <div class="product-title">
      <div class="left">
        <img :src="detail.goods_image" alt="">
      </div>
      <div class="right">
        <div class="price">
          <span>¥</span>
          <span class="nowprice">{{detail.goods_price_min}}</span>
        </div>
        <div class="count">
          <span>库存</span>
          <span>{{ detail.stock_total }}</span>
        </div>
      </div>
    </div>
    <div class="num-box">
      <span>数量</span>
      <!-- v-model 本质上是 :value 和 @input的简写 -->
      <CountBox v-model="addCount"></CountBox>
    </div>
    <div class="showbtn" v-if="detail.stock_total > 0">
      <div class="btn" v-if="mode === 'cart'" @click="addCart()">加入购物车</div>
      <div class="btn now" v-if="mode === 'buyNow'" @click="goBuyNow()">立刻购买</div>
    </div>
    <div class="btn-none" v-else>该商品已抢完</div>
  </div>
</van-action-sheet>
  </div>
</template>

<script>
import{ getProDetail,getProComments } from '@/api/product';
import{ addCart } from '@/api/cart'
import defaultImg from '@/assets/default-avatar.png'
import CountBox from '@/components/CountBox.vue'
//混入
import loginConfirm from '@/mixins/loginConfirm'
export default {
  name: 'ProDetail',
  mixins:[loginConfirm],
  components:{
    CountBox
  },
  data () {
    return {
      images: [
      
      ],
      current: 0,
      detail:{},
      skuId:'',
      total:0,//评价总数
      commentList:[],//评价列表
      defaultImg,
      showPannel:false,
      mode:'cart',//标记弹层状态
      addCount:1,
      cartTotal: 0
    }
  },
  computed: {
  goodsId () {
    return this.$route.params.id
  }
},
 created(){
    this.getDetail()
    this.getComments()
    this.sayHi()
  },
  methods: {
    onChange (index) {
      this.current = index
    },
  async getDetail(){
    //     {data:{detail}} 是二次解构
      const {data:{detail}} = await getProDetail (this.goodsId)
      this.detail=detail
      this.skuId = detail.skuList[0].goods_sku_id
      this.images = detail.goods_images
      console.log(this.skuId,'商品id' );
    },
  async getComments(){
    const {data:{list,total}}= await getProComments(this.goodsId,3)
    // console.log('评价',res);
    this.commentList = list
    this.total = total
  },
  addFn(){
    this.mode='cart'
    this.showPannel=true

      console.log("打印计算属性goodsid",this.goodsId);
  },
  buyFn(){
    this.mode='buyNow'
    this.showPannel=true
  },
  // 根据登录状态，判断是否需要显示登录确认框
  // 1.如果未登录 =>显示确认框 返回true
  // 2.如果已登录 => 啥也不干 返回false
  
  async addCart(){
//     // 判断token是否存在
//     // 1.如果token不存在，弹确认框
//     // 2.如果token存在，继续请求操作
//     if(!this.$store.getters.token){
//       // 弹确认框
//       console.log('请先登录');
//      this.$dialog.confirm({
//       title: '温馨提示',
//       message: '需要登录才能操作',
//       confirmButtonText:'去登录',
//       cancelButtonText:'再逛逛'
// }).then(() => {
//   // 如果希望，跳到登录=>登录后能回跳回来，需要在跳转去携带参数(当前的路径地址)
//   // this.$route.fullPath(参数)
//       this.$router.replace({
//         path:'/login',
//         query:{
//           backUrl:this.$route.fullPath
//         }
//       })
//     }) 
//   .catch(()=>{})  
//       return 
//     }
//  loginConfirm()是使用了mixins混入
if(this.loginConfirm()){
  return
}
    const {data}= await addCart(this.goodsId, this.addCount, this.detail.skuList[0].goods_sku_id)
    
  this.cartTotal = data.cartTotal
  this.$toast('加入购物车成功')
  this.showPannel = false
    // console.log(res);
    console.log('正常请求');
  
    },
    goBuyNow () {
      //  loginConfirm()是使用了mixins混入
      if(this.loginConfirm()){
  return
}
  this.$router.push({
    path: '/pay',
    query: {
      mode: 'buyNow',
      goodsId: this.goodsId,
      goodsSkuId: this.detail.skuList[0].goods_sku_id,
      goodsNum: this.addCount
    }
  })
},
  }
  
}
</script>

<style lang="less" scoped>
.prodetail {
  padding-top: 46px;
  ::v-deep .van-icon-arrow-left {
    color: #333;
  }
  img {
    display: block;
    width: 100%;
  }
  .custom-indicator {
    position: absolute;
    right: 10px;
    bottom: 10px;
    padding: 5px 10px;
    font-size: 12px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 15px;
  }
  .desc {
    width: 100%;
    overflow: scroll;
    ::v-deep img {
      display: block;
      width: 100%!important;
    }
  }
  .info {
    padding: 10px;
  }
  .title {
    display: flex;
    justify-content: space-between;
    .now {
      color: #fa2209;
      font-size: 20px;
    }
    .oldprice {
      color: #959595;
      font-size: 16px;
      text-decoration: line-through;
      margin-left: 5px;
    }
    .sellcount {
      color: #959595;
      font-size: 16px;
      position: relative;
      top: 4px;
    }
  }
  .msg {
    font-size: 16px;
    line-height: 24px;
    margin-top: 5px;
  }
  .service {
    display: flex;
    justify-content: space-between;
    line-height: 40px;
    margin-top: 10px;
    font-size: 16px;
    background-color: #fafafa;
    .left-words {
      span {
        margin-right: 10px;
      }
      .van-icon {
        margin-right: 4px;
        color: #fa2209;
      }
    }
  }

  .comment {
    padding: 10px;
  }
  .comment-title {
    display: flex;
    justify-content: space-between;
    .right {
      color: #959595;
    }
  }

  .comment-item {
    font-size: 16px;
    line-height: 30px;
    .top {
      height: 30px;
      display: flex;
      align-items: center;
      margin-top: 20px;
      img {
        width: 20px;
        height: 20px;
      }
      .name {
        margin: 0 10px;
      }
    }
    .time {
      color: #999;
    }
  }

  .footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 55px;
    background-color: #fff;
    border-top: 1px solid #ccc;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    .icon-home, .icon-cart {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      .van-icon {
        font-size: 24px;
      }
    }
    .btn-add,
    .btn-buy {
      height: 36px;
      line-height: 36px;
      width: 120px;
      border-radius: 18px;
      background-color: #ffa900;
      text-align: center;
      color: #fff;
      font-size: 14px;
    }
    .btn-buy {
      background-color: #fe5630;
    }
  }
}
    
.tips {
  padding: 10px;
}

.product {
  .product-title {
    display: flex;
    .left {
      img {
        width: 90px;
        height: 90px;
      }
      margin: 10px;
    }
    .right {
      flex: 1;
      padding: 10px;
      .price {
        font-size: 14px;
        color: #fe560a;
        .nowprice {
          font-size: 24px;
          margin: 0 5px;
        }
      }
    }
  }

  .num-box {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    align-items: center;
  }

  .btn, .btn-none {
    height: 40px;
    line-height: 40px;
    margin: 20px;
    border-radius: 20px;
    text-align: center;
    color: rgb(255, 255, 255);
    background-color: rgb(255, 148, 2);
  }
  .btn.now {
    background-color: #fe5630;
  }
  .btn-none {
    background-color: #cccccc;
  }
}

.footer .icon-cart {
  position: relative;
  padding: 0 6px;
  .num {
    z-index: 999;
    position: absolute;
    top: -2px;
    right: 0;
    min-width: 16px;
    padding: 0 4px;
    color: #fff;
    text-align: center;
    background-color: #ee0a24;
    border-radius: 50%;
  }
}
</style>